package com.ewins.weatherdataclient.downloadmodule;

import com.ewins.weatherdataclient.common.Constant;
import com.ewins.weatherdataclient.interfacedatamodule.InterfaceDataManagerHttp;
import com.ewins.weatherdatautils.bean.DownloadStateBean;
import com.ewins.weatherdatautils.bean.SiteInfoBean;
import com.ewins.weatherdatautils.bean.UploadFileLog;
import com.ewins.weatherdatautils.utils.SqliteAccess;
import com.ewins.weatherdatautils.utils.Utils;
import com.google.common.eventbus.EventBus;
import org.apache.log4j.Logger;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;

public class SiteFileFetchHttp extends Thread {
    Logger log=Logger.getLogger(SiteFileFetchHttp.class);
    SiteInfoBean siteInfoBean = null; // 文件信息Bean
    long[] nStartPos; // 开始位置
    long[] nEndPos; // 结束位置
    FileSplitterFetchHttp[] fileSplitterFetch; // 子线程对象
    long nFileLength; // 文件长度
    boolean bFirst = true; // 是否第一次读取文件
    boolean bStop = false; // 停止标志
    File tmpFile; // 文件下载的临时信息
    DataOutputStream output; // 输出到文件的输出流

    EventBus eventBus;
    //HttpDownload httpDownload;
    DownloadStateBean ds;       //下载状态

    private UploadFileLog uploadFileLog=new UploadFileLog();
    private SqliteAccess sqliteAccess;

    public SiteFileFetchHttp(SiteInfoBean bean, EventBus eventBus) throws IOException {

        this.eventBus=eventBus;
        ds=new DownloadStateBean();
        ds.setStartTime(getStartTime());

        siteInfoBean = bean;
        // tmpFile = File.createTempFile ("zhong","1111",new
        // File(bean.getSFilePath()));
        tmpFile = new File(bean.getSFilePath() + File.separator
                + bean.getSFileName() + ".info");
        if (tmpFile.exists()) {
            bFirst = false;
            read_nPos();
        } else {
            nStartPos = new long[bean.getNSplitter()];
            nEndPos = new long[bean.getNSplitter()];
        }
    }

    public void run() {
        // 获得文件长度
        // 分割文件
        // 实例 FileSplitterFetch
        // 启动 FileSplitterFetch 线程
        // 等待子线程返回
        try {
            if (bFirst) {
                nFileLength = getFileSize();
                if(nFileLength == 0|| nFileLength==-1){
                    log.error(siteInfoBean.getSFileName() + "文件为空!");
                    ds.setFileError("文件为空");
                    ds.setIsContinue(false);
                    ds.setIsDownload("T");
                    eventBus.post(ds);
                    Utils.deleteRemoteFile(siteInfoBean, ".tmp");
                    Utils.deleteRemoteFile(siteInfoBean, ".info");
                }else if (nFileLength == -2) {
                    log.error(siteInfoBean.getSFileName() + ":文件不存在！");
                    ds.setFileError("网络连接异常");
                    ds.setIsContinue(false);
                    ds.setIsDownload("T");
                    eventBus.post(ds);
                    Utils.deleteRemoteFile(siteInfoBean, ".tmp");
                    Utils.deleteRemoteFile(siteInfoBean, ".info");
                } else {
                    for (int i = 0; i < nStartPos.length; i++) {
                        nStartPos[i] = (long) (i * (nFileLength / nStartPos.length));
                    }
                    for (int i = 0; i < nEndPos.length - 1; i++) {
                        nEndPos[i] = nStartPos[i + 1];
                    }
                    nEndPos[nEndPos.length - 1] = nFileLength;
                }
            }
            // 启动子线程
            fileSplitterFetch = new FileSplitterFetchHttp[nStartPos.length];
            for (int i = 0; i < nStartPos.length; i++) {
//                fileSplitterFetch[i] = new FileSplitterFetchHttp(siteInfoBean.getSSiteURL(), siteInfoBean.getSFilePath()
//                        + File.separator + siteInfoBean.getSFileName(), nStartPos[i], nEndPos[i], i,this.eventBus);
                fileSplitterFetch[i] = new FileSplitterFetchHttp(siteInfoBean, nStartPos[i], nEndPos[i], i,this.eventBus);
//                log.info("Thread " + i + " , nStartPos = " + nStartPos[i]+ ", nEndPos = " + nEndPos[i]);
                fileSplitterFetch[i].start();
            }
            // fileSplitterFetch[nPos.length-1] = new
            // FileSplitterFetch(siteInfoBean.getSSiteURL(),siteInfoBean.getSFilePath()
            // + File.separator +
            // siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
            // Utility.log("Thread " +(nPos.length-1) +
            // ",nStartPos = "+nPos[nPos.length-1]+",nEndPos = " + nFileLength);
            // fileSplitterFetch[nPos.length-1].start();
            // 等待子线程结束
            // int count = 0;
            // 是否结束while循环
            boolean breakWhile = false;
            while (!bStop) {
                write_nPos();
                Thread.sleep(500);
                breakWhile = true;
                for (int i = 0; i < nStartPos.length; i++) {
                    if (!fileSplitterFetch[i].bDownOver) {
                        breakWhile = false;
                        break;
                    }
                }
                if (breakWhile)
                    break;
                // count++;
                // if(count>4)
                // siteStop();
            }
            log.info(siteInfoBean.getSFileName()+"文件下载结束！ ");

        } catch (Exception e) {
            log.error("download Exception " + e.getMessage());
        }
    }

    // 获得文件长度
    public long getFileSize() {
        long nFileLength = -1;
        try {
            URL url = new URL(siteInfoBean.getSSiteURL());
            //HttpsDefault.setDefaultValue();
            HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
            //httpsConnection.setSSLSocketFactory(HttpsDefault.getSSLSocketFactory());
            httpConnection.setConnectTimeout(Constant.HttpConnectTimeout);
            httpConnection.setReadTimeout(Constant.HttpReadTimeout);
            httpConnection.setRequestProperty("User-Agent", "NetFox");
            int responseCode = httpConnection.getResponseCode();

            if(responseCode>=404){
                processErrorCode(responseCode);
                return -2;
            }
            String sHeader;
            for (int i = 1;; i++) {
                // DataInputStream in = new
                // DataInputStream(httpConnection.getInputStream ());
                // Utility.log(in.readLine());
                sHeader = httpConnection.getHeaderFieldKey(i);
                if (sHeader != null) {
                    if (sHeader.equals("Content-Length")) {
                        nFileLength = Long.parseLong(httpConnection.getHeaderField(sHeader));
                        break;
                    }
                } else
                    break;
            }
            httpConnection.disconnect();
        } catch (IOException e) {
            log.error("IOException Exception " + e.getMessage());
        } catch (Exception e) {
            log.error("download Exception " + e.getMessage());
        }
        log.info(siteInfoBean.getSFileName() + "当前文件大小" + nFileLength);
        return nFileLength;
    }

    // 保存下载信息（文件指针位置）
    private void write_nPos() {
        try {
            output = new DataOutputStream(new FileOutputStream(tmpFile));
            output.writeInt(nStartPos.length);
            for (int i = 0; i < nStartPos.length; i++) {
                // output.writeLong(nPos[i]);
                output.writeLong(fileSplitterFetch[i].nStartPos);
                output.writeLong(fileSplitterFetch[i].nEndPos);
            }
            output.close();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    //读取保存的下载信息（文件指针位置）
    private void read_nPos() {
        try {
            DataInputStream input = new DataInputStream(new FileInputStream(
                    tmpFile));
            int nCount = input.readInt();
            nStartPos = new long[nCount];
            nEndPos = new long[nCount];
            for (int i = 0; i < nStartPos.length; i++) {
                nStartPos[i] = input.readLong();
                nEndPos[i] = input.readLong();
            }
            input.close();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void processErrorCode(int nErrorCode) {
        log.info("Error Code : " + nErrorCode+","+siteInfoBean.getSFileName()+"  文件不存在");
    }

    // 停止文件下载
    public void siteStop() {
        bStop = true;
        for (int i = 0; i < nStartPos.length; i++) {
            if( fileSplitterFetch[i] != null) {
                fileSplitterFetch[i].splitterStop();
            }
        }
    }

    //开始时间
    public static String getStartTime(){
        Date a = new Date();
        SimpleDateFormat f = new SimpleDateFormat("yyyy/MM/dd hh:mm:ss");
        String startTime = f.format(a);
        return startTime;
    }

}